[libcxx-commits] [libcxx] [libc++] Allow the use of extensions in the implementation (PR #79532)

[Konstantin Varlamov via libcxx-commits]

var-const wrote:

This is awesome! Is there a list of which extensions are available in which language modes -- or perhaps we should create one? It doesn't have to be exhaustive -- just listing some of the major, most clearly useful extensions with the minimum language standard where it can be used would be really useful, IMO (we can also have a checkbox saying whether there's already precedent for using the extension in the codebase, it might help rolling this out more gradually).

https://github.com/llvm/llvm-project/pull/79532